Uploading to Firebase Cloud Storage

upload.java

private fun uploadFile(f: File) {
    val sdf = SimpleDateFormat("yyyyMMddHHmmss", Locale.US)
    val storagePath = "/pictures/${sdf.format(Date())}.jpg"
    val ref = FirebaseStorage.getInstance().getReference(storagePath)
    ref.putFile(Uri.fromFile(f))
        .addOnSuccessListener(this) {
            Log.i(TAG, "picture uploaded")
        }
        .addOnFailureListener(this) { e ->
            Log.i(TAG, "upload failed", e)
        }
        .addCompleteListener(this) {
            f.delete()
        }
}